<template>
    <div class="list" ref="wrapper">
      <div>
        <div class="area">
            <div class="title border-topbottom" >您的位置</div>
            <div class="buttin-list">
                <div class="button-wrapper">
                    <div class="button">{{ this.$store.state.city }}</div>
                </div>
            </div>
        </div>

        <div class="area">
            <div class="title border-topbottom" >热门城市</div>
            <div class="buttin-list">
                <div class="button-wrapper" 
                     v-for="item of hot" 
                     :key="item.id"
                     @click="handleClickCity(item.name)">
                    <div class="button">{{item.name}}</div>
                </div>
            </div>
        </div>

        <div class="area" 
             v-for="(item, key) of newcity"
             :key="key"
             :ref="key">
            <div class="title border-topbottom">{{ key }}</div>
                <div class="item-list">
                    <div class="item border-bottom"
                         v-for="innerItem of item"
                         :key="innerItem.id"
                         @click="handleClickCity(innerItem.name)">
                         {{ innerItem.name }}
                    </div>  
                </div>
        </div>
      </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState,mapMutations } from 'vuex';
export default {
    props: {
       hot: Array,
       newcity: Object,
       letters: String
    },

    name: 'CityList',

    methods: {
      handleClickCity (city) {
        this.$store.dispatch('changeCity',city)
        this.$router.push('/')
      },
    },

    mounted () {
        this.scroll = new Bscroll(this.$refs.wrapper)
    },

    updated() {
      this.scroll.refresh()
    },

    
    watch: {
      letters () {
         if(this.letters){
           let element = this.$refs[this.letters][0]
           this.scroll.scrollToElement(element)
         }
      }
    }
}
</script>

<style lang="stylus" scoped>
   @import '~styles/varibles.styl'
   .border-topbottom
    &:before
      border-color: #ccc
    &:after
      border-color: #ccc
    .border-topbottom
    &:before
      border-color: #ccc
  .list
    overflow: hidden
    left: 0
    right: 0
    top: 1.58rem
    bottom: 0
    position: absolute
    .title
     line-height: .7rem
     background: #eee
     padding-left: .2rem
     color: #666
     font-size: .26rem
    .buttin-list
      overflow: hidden
      padding: .1rem .6rem .1rem .1rem
      .button-wrapper
        float: left
        width: 33.3%
        .button
          margin: .1rem
          padding: .1rem 0
          text-align: center
          border: .02rem solid #ccc
          border-radius: .06rem
    .item-list
      .item
        line-height: .76rem
        color: #666
        padding-left: .2rem
</style>
